Question

find the volume of hemisphere and surface area is 154 cm square

Answer 1

Volume of hemisphere = 2/3×22/7r^2

Answer 2

Answer:

89 integer 5/6

Step-by-step explanation:

Let radius of sphere be r cm

Volume of Sphere = 154cm²

4πr² = 154

⇒4×22/7×r²=154

⇒r²= 154×7/22×4

⇒r²=49/4

⇒r=√49/4

∴ r= 7/2

Volume of Hemisphere = 2/3πr²

                                     = 2/3×22/7×7/2×7/2

                                     =77×7/6

                                     =539/6

                                      = 89integer 5/6

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